Simple Java program to print student details using constructor

Print Student Details Using constructor

Let's try to create a simple example in java without user input :

  ➤ Example : student.java;

class Student{	
  int roll_no;  
  String name, myclass, gender; 

   //creating a parameterized constructor 
   Student(int roll, String nam, String c) {
	roll_no = roll ; 
	name = nam;
	myclass = c;
  }  	
//method to display the values  
  void display(){
	System.out.println("My name is "+name+", I study in "+myclass+" class and my roll number is "+roll_no);
  }	 
  public static void main(String arg[]){
  //creating objects and passing values  
    Student s1 = new Student(2, "Ankaj", "12th");
    Student s2 = new Student(25, "Anmol", "9th");
    Student s3 = new Student(1, "Sudeep", "10th");	
    
   //calling method to display the values of object 
   	 s1.display();  
     s2.display();
     s3.display();  
  }	      
} 

Output :

My name is Ankaj I study in 12th class and my roll number is 2

My name is Anmol I study in 9th class and my roll number is 25

My name is Sudeep I study in 10th class and my roll number is 1

• How to run java program.